fender twin, deluxe reverb, princeton, same AB763 circuit?

Tonecap

Member
Messages
347
I'm trying to understand the difference between those 3 amps and how they relate to the AB763 circuit. For example, is the deluxe reverb a 22w version of a twin? Princeton, a 14w version? Enlighten me! Thanks
 

pula58

Gold Supporting Member
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1,678
The Princeton Reverb is not AB763. It has a different phase inverter, amongst other differences. It's tone stack, though, is the same as the AB763's. It also different tremelo circuit than the AB763 amplifiers.

The Deluxe reverb and twin reverb are closer to each other. But, again there are differences, the deluxe reverb is tube-rectifed, whilest the twin reverb is diode-rectified. The deluxe reverb is brite (it's "brite cap" is always "on" so to speak), the twin has an adjustable mid range, and of course, the twin has 4 6L6 output tubes, much larger transformers, 4ohm output Z, and two speakers.
 
Last edited:

Tonecap

Member
Messages
347
The Princeton Reverb is not AB763. If has a different phase inverter, amongst other differences. It's tone stack, though, is the same as the AB763's. It also different tremelo circuit than the AB763 amplifiers.


Thanks for the clarification. For some reason I thought it was AB763 but you're right.
 

smolder

Gold Supporting Member
Messages
15,013
IMHO - Amongst the 763 fender amps... the primary tonal differences (barring volume) can be attributed to:

1 speakers
2 transformers

the other differences that effect tone less are (arguably):

power tubes, PI, negative feedback loop, combo vs closed cab
 




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